Capuchin was a Newark resident, according to her Facebook profile.
According to KRON 4, Capuchin was in a vehicle with her 3-month-old baby Salvador and her 17-year-old sister at the time of the accident. There was an argument that prompted Capuchin to take her son and, along with her sister, exit the vehicle at the intersection at around around 9:55 p.m.
As they walked across the intersection, all three were struck by a truck driven by a 64-year-old man. According to reports, the baby was thrown 30 feet as a result of the impact.
Police say they were not using the crosswalk, according to KRON 4, and the driver is not suspected of drunken driving.
All three were rushed to hospitals with Capuchin succumbing to her injuries later in the night. Three-month-old Salvador remains at Oakland Children's Hospital.
"No matter how ugly this was, we just pray that Salvador makes it," a relative told KRON 4. Watch the KRON 4 report here.
Many took to social media after reports of Capuchin's death to pay tribute to her life and send prayers for her son.
"Ashley: an angel, a mother, a loved one, a friend, a beautiful woman. It's not fair. Always in our hearts," wrote Twitter user @Alicia_Inspired.
See more social media reactions in the Storify widget above.
------Sign up for the free Fremont Patch newsletter | Like Fremont Patch on Facebook | Follow @FremontPatch on Twitter | Blog for Fremont Patch